回形針在validates_presence_of失敗

行，所以我有一個模型，在該模型中，我有回形針在validates_presence_of失敗

class User < ActiveRecord::Base 
    validates_presence_of :name 
    has_attached_file :picture, :styles => { :medium => "300x300>", :thumb => "100x100>",:tiny => "25x25>" } 
end

當我創建一個用戶，並上傳一張照片，不輸入名稱我得到預期的消息

1 error prohibited this user from being saved. 
There were problems with the following fields: 
    * Name can't be blank

但圖像消失......當我看到我的控制檯我看

 [paperclip] identify -format %wx%h '/var/folders/QK/QK+tCPT-Gx8yGDxVQbDuF++++TI/-Tmp-/stream20110113-19714-1ucz75p-0.jpg[0]' 2>/dev/null 
     [paperclip] convert '/var/folders/QK/QK+tCPT-Gx8yGDxVQbDuF++++TI/-Tmp-/stream20110113-19714-1ucz75p-0.jpg[0]' -resize "25x25>" '/var/folders/QK/QK+tCPT-Gx8yGDxVQbDuF++++TI/-Tmp-/stream20110113-19714-1ucz75p-020110113-19714-r839l2-0' 2>/dev/null

但圖像消失在新的p年齡....有沒有一種方法來保存此圖像，以便任何人使用該頁面不必再次瀏覽圖像

來源

2011-01-13 Trace